mirror of
https://github.com/samber/awesome-prometheus-alerts.git
synced 2026-06-21 00:47:18 +08:00
53 lines
2 KiB
YAML
53 lines
2 KiB
YAML
groups:
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- name: RubyExporter
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rules:
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# Threshold is a rough default. Adjust based on your application's normal heap size.
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- alert: RubyHeapLiveSlotsHigh
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expr: 'ruby_heap_live_slots > 500000'
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for: 5m
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labels:
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severity: warning
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annotations:
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summary: Ruby heap live slots high (instance {{ $labels.instance }})
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description: "Ruby heap has too many live slots (> 500k), heap bloat\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
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- alert: RubyHeapFreeSlotsHigh
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expr: 'ruby_heap_free_slots > 500000'
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for: 5m
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labels:
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severity: warning
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annotations:
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summary: Ruby heap free slots high (instance {{ $labels.instance }})
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description: "Ruby heap has too many free slots (> 500k), memory fragmentation after large allocations\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
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# Major GC rate > 5/s only fires if the app is essentially non-functional. Threshold of 2/s provides earlier detection.
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- alert: RubyMajorGcRateHigh
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expr: 'rate(ruby_major_gc_ops_total[5m]) > 2'
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for: 5m
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labels:
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severity: warning
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annotations:
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summary: Ruby major GC rate high (instance {{ $labels.instance }})
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description: "Ruby is performing too many major GC cycles, indicating memory pressure\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
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- alert: RubyRssHigh
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expr: 'ruby_rss > 1e9'
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for: 5m
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labels:
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severity: warning
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annotations:
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summary: Ruby RSS high (instance {{ $labels.instance }})
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description: "Ruby process RSS is high (> 1GB)\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
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- alert: RubyAllocatedObjectsSpike
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expr: 'rate(ruby_allocated_objects_total[5m]) > 100000'
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for: 5m
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labels:
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severity: warning
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annotations:
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summary: Ruby allocated objects spike (instance {{ $labels.instance }})
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description: "Ruby is allocating objects at a high rate\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
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